TX 75083-3836, U.S.A., fax 01-972-952-9435. AbstractThe cost of remedial work on marginal gas wells suffering from water unloading problems can be prohibitive, especially in an offshore environment. The expected financial return often does not justify the rig costs associated with pulling and running a new completion, while the formation damage caused by many well-killing methods can reduce the production potential of already marginal wells.The paper discusses the design and execution of the operation where Coiled Tubing and jointed tubing were used as a complex velocity string in order to restore production on a gas well, while retaining the full functionality of the downhole safety valve. Particular attention will be paid to the design of the string, which had to be tailored to remain within the operating envelope of the externally flush thread.